Carnival CEO comes under Congressional heat

Miami Heat owner Micky Arison has the hottest team in pro basketball. Still, Carnival Cruise Lines which made him a billionaire has had a string of problems, and a powerful U.S. senator is criticizing him for using loopholes to pay almost no corporate taxes. Harry Smith looks at the high and lows of one of America's wealthiest men tonight at 10pm/9c on NBC's Rock Center with Brian Williams.